"""
Layout generator abstract interface
Define standard process for layout generation
"""
from abc import ABC, abstractmethod
from pathlib import Path
from typing import Optional


class LayoutGenerator(ABC):
    """Layout generator base class"""
    
    @abstractmethod
    def generate(
        self,
        config_path: Path,
        output_dir: Path,
        seed: int = 0
    ) -> Path:
        """
        Generate layout
        
        Args:
            config_path: Configuration file path
            output_dir: Output directory
            seed: Random seed
            
        Returns:
            Generated .blend file path
        """
        pass
    
    @abstractmethod
    def validate_config(self, config_path: Path) -> bool:
        """Validate if configuration file is valid"""
        pass


class GenerationError(Exception):
    """Layout generation error"""
    pass